Think about this.
distance = rate x time.
Truck: d = 75t. Solve for t = d/75
Car: started behind by 100 m which is 0.1 km so d+0.1 = 100t. Solve for t = (d+0.1)/100.
Now we know that the time for the car and the time for the truck are equal so set the times = to each other.
d/75 = (d+0.1)/100
Solve for d and d+0.1 and plug those back into the original equations above to find time. Post your work if you get stuck. Check my thinking.
A car traveling 90km/h is 100m behind a truck traveling 75km/h. How
long will it take the car to reach the truck?
which one of newtons 4 equations should be used in order to solve this equation?
V=Vo + at
X=Xo + Vot + 1/2 at2
V2= Vo2 + 2a(X-Xo)
_
V=V+vo/2
any help i can get is good...thankyou :)
3 answers
Well to be perfectly honest, i just started taking physics so im only up to the level where to me d=d and not rate x time....i am totally lost at what u did, but its ok, thanks for your help anyway, i think i understand a bit more now.
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